MoveTowards is moveing my object to random position when i click it is already on a way

Hello, i want to rotate and after it move my 2D object to clicked position. I used RotateTowards for rotate and MoveTowards for move my object. But sometimes when i click to any position when it is already on a way to position, it is going to random position, not to that first clicked position or second one. I can't understand why sometimes doing this. Also i am open to another ideas about make better my codes because this is my first Unity script. I am not experienced about that.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Movement : MonoBehaviour
 {
     private float movementSpeed = 2;
     private float rotationSpeed = 300;
 
     private bool IsRotating = false;
     private bool rotated = false;
     private bool IsMoving = false;
 
     private Vector3 targetPosition;
     private Quaternion rotation;
 
     void Update()
     {
         if(Input.GetMouseButtonDown(0))
         {
             Debug.Log("Tiklandi.");
             IsRotating = false;
             rotated = false;
             IsMoving = false;
             SetAngle();
         }
 
         if(IsRotating == true && IsMoving == false && rotated == false)
         {
             Rotation(); 
         }
 
         if (rotated == true && IsRotating == false && IsMoving == false)
         {
             SetTargetPosition();
         }
 
         if (IsMoving == true && rotated == true && IsRotating == false)
         {
             Move();
         }
     }
 
     void SetAngle()
     {
         Debug.Log("SetAngle calisti.");
         Vector2 dir = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
         float angle = Mathf.Atan2(dir.y, dir.x) * Mathf.Rad2Deg;
         rotation = Quaternion.AngleAxis(angle - 90, Vector3.forward);
 
         IsRotating = true;
     }
 
     void Rotation()
     {
         Debug.Log("Rotation calisti.");
         transform.rotation = Quaternion.RotateTowards(transform.rotation, rotation, rotationSpeed * Time.deltaTime);
 
         if (transform.rotation == rotation)
         {
             IsRotating = false;
             rotated = true;
         }
     }
 
     void SetTargetPosition()
     {
         Debug.Log("SetTargetPosition calisti.");
         targetPosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);
         targetPosition.z = transform.position.z;
 
         Debug.Log(targetPosition);
         IsMoving = true;
     }
 
     void Move()
     {
         Debug.Log("Move calisti.");
         transform.position = Vector3.MoveTowards(transform.position, targetPosition, movementSpeed * Time.deltaTime);
         if (transform.position == targetPosition)
         {
             rotated = false;
             IsMoving = false;
         }
     }
 }